Move level_name resolving to Gitlan::VisibilityLevel

app/services/base_service.rb

@@ -39,10 +39,7 @@ class BaseService
   def deny_visibility_level(model, denied_visibility_level = nil)
     denied_visibility_level ||= model.visibility_level
 
-    level_name = 'Unknown'
-    Gitlab::VisibilityLevel.options.each do |name, level|
-      level_name = name if level == denied_visibility_level
-    end
+    level_name = Gitlab::VisibilityLevel.level_name(denied_visibility_level)
 
     model.errors.add(
       :visibility_level,

lib/gitlab/visibility_level.rb

@@ -51,6 +51,15 @@ module Gitlab
       def allowed_fork_levels(origin_level)
         [PRIVATE, INTERNAL, PUBLIC].select{ |level| level <= origin_level }
       end
+
+      def level_name(level)
+        level_name = 'Unknown'
+        options.each do |name, lvl|
+          level_name = name if lvl == level
+        end
+
+        level_name
+      end
     end
 
     def private?